ABS Module Communications Error
The ABS control module is not communicating properly with the vehicle's network.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The ABS module isn't talking to the vehicle's computer correctly, which can mean problems in the wiring or the module itself.
What the computer is actually seeing
When the ABS module fails to send or receive messages on the vehicle's CAN bus, the communication signal may drop below the acceptable threshold for a period longer than 0.5 seconds, triggering this code.
What a healthy reading looks like
The ABS module should be sending and receiving messages on the CAN bus at a rate of at least 10 messages per second.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the wiring and connectors to the ABS module for corrosion or damage.
- 2Inspect the power and ground circuits for proper voltage (typically around 12V) and continuity.
- 3Connect a scan tool and verify communication with the ABS module; if not communicating, move to the next step.
- 4Test the CAN bus for proper signal voltage levels (typically between 2.5V to 5V). If readings are out of range, address the bus issue.
- 5If other modules communicate fine but the ABS module doesn't, replace the ABS control module.
Common causes
- Corroded or damaged wiring
- Faulty ABS control module
- Loose or broken connectors
- Issues with the vehicle's CAN bus
- Faulty power or ground circuits for the ABS module
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
Driving is technically safe, but the ABS won't function correctly which may affect braking performance in slippery conditions.
Will this code come back after clearing?
If the underlying issue isn't fixed, the code is likely to return after clearing.
Why does this code pair with other C codes?
C codes often indicate communication problems and may show up together if multiple modules are affected.
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